配方施肥对青海云杉无性系半同胞子代幼树生长的影响
Effects of Formula Fertilization on the Growth of Clone Half-sib Progeny Saplings of Picea crassifolia

选择8个青海云杉优良无性系半同胞子代幼树分别在苗木生长过程中配制T1、T2、T3、T4 4种配方的氮磷钾复合肥进行土壤追肥,系统地研究配方施肥对青海云杉不同半同胞无性系子代幼树生长的影响，对每个家系内4 种施肥处理与非施肥处理的苗木苗高、胸径、冠幅生长量进行方差分析和多重比较,确定各个家系的最佳施肥配方。结果表明，4种施肥配方均能改善青海云杉幼树的生长,家系7#、48#、67#、84#的最佳施肥配方均是T3；家系14#、32#、58#、62#的最佳施肥配方均是T1。
The effects of 4 kinds of nitrogen, phosphorus, and potassium formula fertilization (T1, T2, T3, and T4) on the growth of 8 superior families in the clones half-sib progeny saplings of Picea crassifolia were studied by variance analysis and multiple comparison of height, DBH, and crown width to establish optimal formula. The results demonstrated that all the 4 kinds of formula fertilization could improve the growth of saplings of P. crassifolia. The best formula fertilization for family No. 7, No. 48, No. 67, No. 84 was T3, while T1 for family No. 14, No. 32, No. 58, and No. 62